[wuhn-naf-thawl, -thol, -nap-] /ˈwʌnˈnæf θɔl, -θɒl, -ˈnæp-/ noun, chemistry alpha-naphthol. see under naphthol. naphthol [naf-thawl, -thol, nap-] /ˈnæf θɔl, -θɒl, ˈnæp-/ noun, chemistry either of two isomeric hydroxyl derivatives, c 1 0 h 7 oh, of naphthalene (alpha-naphthol or 1-naphthol and beta-naphthol or 2-naphthol) white or yellowish crystals, with a phenolic odor, that darken on exposure to light: used chiefly in dyes, drugs, perfumes, and insecticides. also called hydroxynaphthalene. naphthol /ˈnæfθɒl; ˈnæp-/ noun a white crystalline solid having two isomeric forms, alpha-naphthol, used in dyes, and beta-naphthol, used in dyes and as an antioxidant. formula: c10h7oh word origin c19: from naphtha + -ol1

naphthol naph·thol (nāf’thôl’, -thōl’, nāp’-) or naph·tol (-tôl, -tōl) n. an organic compound occurring in two isomeric forms, alpha-naphthol and beta-naphthol. also called naphthalenol. naphthol (nāf’thôl’, -thōl’, nāp’-) a poisonous organic compound occurring in two isomeric forms. both isomers are important in the manufacture of dyes, and also in making antiseptics, insecticides, and tanning agents. naphthol consists of a hydroxyl group (oh) attached to naphthalene. chemical formula: c10h8o. naphthol

either of two colourless, crystalline organic compounds derived from naphthalene and belonging to the phenol family; each has the molecular formula c10h7oh. both compounds have long been identified with the manufacture of dyes and dye intermediates; they also have important uses in other areas of the chemical industry. learn more about naphthol with a free trial on britannica.com

[ted-er] /ˈtɛd ər/ noun arthur william, 1st baron, 1890–1967, british royal air force marshal and educator, born in scotland. tedder /ˈtɛdə/ noun a machine equipped with a series of small rotating forks for tedding hay a person who teds tedder /ˈtɛdə/ noun arthur william, 1st baron tedder of glenguin. 1890–1967, british marshal of the royal […]

[ted-er] /ˈtɛd ər/ noun arthur william, 1st baron, 1890–1967, british royal air force marshal and educator, born in scotland. tedder /ˈtɛdə/ noun a machine equipped with a series of small rotating forks for tedding hay a person who teds tedder /ˈtɛdə/ noun arthur william, 1st baron tedder of glenguin. 1890–1967, british marshal of the royal […]

[bair-ing] /ˈbɛər ɪŋ/ noun alexander, 1st baron ashburton, 1774–1848, british statesman. evelyn, 1st earl of cromer, 1841–1917, british statesman and diplomat. baring /ˈbɛərɪŋ/ noun evelyn, 1st earl of cromer. 1841–1917, english administrator. as consul general in egypt with plenipotentiary powers, he controlled the egyptian government from 1883 to 1907

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